Mary D. Gaddy, MD
Neurology Physician · Billings, MT
Mary D. Gaddy, MD is a neurology physician with a practice address in Billings, Montana, and NPI 1982716551, issued on Aug 31, 2006. Check the license (Montana 6313, as entered in NPPES) on the Montana Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Mary D. Gaddy
- Credential
- MD
- Primary taxonomy
- Neurology Physician 2084N0400X
- License number
- 6313 MT
Self-reported in NPPES; status is on the state search - Practice location
- 801 N 29TH St, Billings, MT 59101
- Phone
- (406) 238-2500
- Enumerated
- Aug 31, 2006
- Record last updated
- Feb 22, 2022
- Medicare enrollment
- Enrolled (PECOS I20100107000143); accepts Medicare assignment
- Medical or professional school
- University Of Missouri, Columbia School Of Medicine, 1980
- Entity
- Type 1 · individual
8 nearest neurology physician records → All 54 in Montana → Look up another NPI →
Also registered at 801 N 29TH St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Bijan Andrade, DPMFoot & Ankle Surgery Podiatrist1891059556
Verify Mary D. Gaddy in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMontana Board of Medical Examiners
Search for license 6313Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The MIPS final score for 2023 (Medicare payment program): 94.3 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
One hospital affiliation
- Billings ClinicBillings, MT · Acute Care Hospitals4 of 5 stars
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Mary D. Gaddy among 54 neurology physician records in Montana
Mary D. Gaddy, MD is one of 54 neurology physician records with a practice address in Montana. 78% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 13% of them.
- NPI issued2006 · 13% of these records are older, 43% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated1980 · median 2000 among the 37 with a school on file
- Record last updated2022 · 39% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084N0400X and a Montana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Neurology Physician providers in Montana
There are 54 neurology physician records in Montana.
All 54 in Montana → Every provider in Billings → Neurology Physician nationwide →
The 8 neurology physician records with the nearest ZIP codes
- Steven Arbogast, D.O.Billings, MT 591011962615377
- Gauhar ChaudharyBillings, MT 591011477873016
- Ann Collier, MDBillings, MT 591011487898458
- Javier Echeverri, M.D.Billings, MT 591011932169232
- Kris French, M.D.Billings, MT 591011841433034
- Jeffrey Mosser, M.D.Billings, MT 591011891778148
- Dennis Obrien, MDBillings, MT 591011811981699
- Dale Peterson, MDBillings, MT 591011093815672
Common questions
What is Mary D. Gaddy, MD's NPI number?
Mary D. Gaddy, MD's National Provider Identifier (NPI) is 1982716551, issued on Aug 31, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mary D. Gaddy, MD located?
The NPPES record lists a practice address at 801 N 29TH St, Billings, MT, 59101. Phone: (406) 238-2500. Providers update this record themselves, so call before visiting.
How can I verify Mary D. Gaddy, MD's license?
NPPES lists Montana license number 6313, as entered by the provider. Search the Montana Board of Medical Examiners at https://ebiz.mt.gov/POL/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
What is Mary D. Gaddy, MD's MIPS final score?
The 2023 MIPS final score is 94.3 of 100. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.